diff --git a/.travis.yml b/.travis.yml
index 865e21f046b7f..7bffc00ef1bbc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -47,7 +47,7 @@ before_install:
   - if [[ "$JOB" == "PRE_COMMIT" ]]; then sudo ln -s /usr/bin/clang-format-3.8 /usr/bin/clang-format; fi
   # Paddle is using protobuf 3.1 currently. Protobuf 3.2 breaks the compatibility. So we specify the python 
   # protobuf version.
-  - pip install numpy wheel 'protobuf==3.1' sphinx recommonmark sphinx-rtd-theme==0.1.9 virtualenv pre-commit requests==2.9.2 LinkChecker
+  - pip install numpy wheel 'protobuf==3.1' sphinx==1.5.6 recommonmark sphinx-rtd-theme==0.1.9 virtualenv pre-commit requests==2.9.2 LinkChecker
   - |
     function timeout() { perl -e 'alarm shift; exec @ARGV' "$@"; }
 script:
diff --git a/doc/getstarted/index_cn.rst b/doc/getstarted/index_cn.rst
index 0cb27f802c40e..aa418c657a4ba 100644
--- a/doc/getstarted/index_cn.rst
+++ b/doc/getstarted/index_cn.rst
@@ -7,4 +7,4 @@
   build_and_install/index_cn.rst
   concepts/use_concepts_cn.rst
 
-- `深度学习入门课程 <http://book.paddlepaddle.org/>`_
+- `深度学习入门课程 <http://book.paddlepaddle.org/index.cn.html>`_
diff --git a/doc/getstarted/index_en.rst b/doc/getstarted/index_en.rst
index 9f771e93e8b63..be3253e3d41b9 100644
--- a/doc/getstarted/index_en.rst
+++ b/doc/getstarted/index_en.rst
@@ -6,4 +6,4 @@ GET STARTED
 
   build_and_install/index_en.rst
 
-- `Deep Learning 101 <http://book.paddlepaddle.org/index.en.html>`_
+- `Deep Learning 101 <http://book.paddlepaddle.org/index.html>`_